Analysis of Foaming Flow Instabilities for Dynamic Liquid Saturation in Trickle Bed Reactor
The effects of different parameters on the
hydrodynamics of trickle bed reactors were discussed for Newtonian
and non-Newtonian foaming systems. The varying parameters are
varying liquid velocities, gas flow velocities and surface tension. The
range for gas velocity is particularly large, thanks to the use of dense
gas to simulate very high pressure conditions. This data bank has
been used to compare the prediction accuracy of the different
trendlines and transition points from the literature. More than 240
experimental points for the trickle flow (GCF) and foaming pulsing
flow (PF/FPF) regime were obtained for present study.
Hydrodynamic characteristics involving dynamic liquid saturation
significantly influenced by gas and liquid flow rates. For 15 and 30
ppm air-aqueous surfactant solutions, dynamic liquid saturation
decreases with higher liquid and gas flow rates considerably in high
interaction regime. With decrease in surface tension i.e. for 45 and 60
ppm air-aqueous surfactant systems, effect was more pronounced
with decreases dynamic liquid saturation very sharply during regime
transition significantly at both low liquid and gas flow rates.
[1] Geldart, D., Gas fluidization technology, John Wiley & Sons Ltd.,
Chichester, 1986.
[2] Burghardt, A.; Bartelmus, G.; Szlemp, A. 1995. Hydrodynamics of
pulsing flow in three-phase fixed-bed reactor operating at an elevated
pressure, Industrial and Engineering Chemistry Research 43, 4511-
4521.
[3] Bansal, A.; Wanchoo, R. K.; and Sharma, S. K., 2008. Flow regime
transition in a trickle bed reactor, Chemical Engineering
Communication 58 111-118.
[4] Bansal, A., Ph.D Thesis, 2003. Hydrodynamics of trickle bed reactor,
Engineering and Technology Faculty, Punjab University, Patiala,
Punjab, India.
[5] Prud-homme, R.K. and Khan S.A., ÔÇÿFoams, Theory, Measurements, and
Applications-, CRC Press, 1996.
[6] Midoux, N.; Favier, M.; Charpentier, J.C. 1976. Flow patterns, Pressure
loss and Liquid hold up data in Gas Liquid Downflow Paced Beds with
Foaming and Non-foaming Hydrocarbons, Journal of Chemical
Engineering, Japan, 9, 50.
[7] Schwartz, J. G., Wegei, E. and Dudukovic, M. P., 1976, A new tracer
method for determination of liquid-solid contacting efficiency in tricklebed
reactors, A.I.Ch.E.J. 22, 894-904.
[8] Saroha, A.K., Nigam, K.D.P.; 1996. Trickle bed reactors, Reviews in
Chemical Engineering 12, 207-347.
[9] Holub R.A, Dudukovic M.P., Ramachandran P.A.A.; 1992,
Phenomenological model for pressure drop, liquid holdup and flow
regimes transition in gas-liquid trickle flow, Chemical Engineering,
Science 47, 2343-2348.
[10] Grandjean B. P. A., Iliuta. I., Larachi, F.; 2002, New mechanistic model
for pressure drop and liquid holdup in trickle flow reactors, Chemical
Engineering Science 57, 3359 - 3371.
[11] Bartelmus G., Janecki, D.; 2003. Hydrodynamics of a cocurrent
downflow of gas and foaming liquid through the packed bed. Part II.
Liquid holdup and gas pressure drop, Chemical Engineering Process. 42,
993-1005.
[12] Larachi, F., Laurent, A., Midoux, N., Wild, G.; 1991. Experimental
study of a trickle bed reactor operating at high pressure: two-phase
pressure drop and liquid saturation. Chemical Engineering Science 46,
1233-1246.
[13] Iliuta, I., Larachi, F.; 2003, Onset of pulsing in gas-liquid trickle bed &
filtration, Chemical Engineering Science 59, 1199 - 1211.
[14] Aydin, B., Larachi, F.; 2008. Trickle bed hydrodynamics for non-
Newtonian foaming liquids in non-ambient conditions. Chemical
Engineering Journal 143, 236-243.
[15] Charpentier J.C., Favier M.; 1975, Some liquid holdup experimental data
in trickle bed reactors for foaming and non-foaming hydrocarbons,
A.I.Ch.E. Journal 21, 1213-1218.
[16] Sai, P.S.T., Varma, Y.B.G.; 1987. Pressure drop in gas-liquid downflow
through packed beds, American Institute of Chemical Engineering.
Journal 33, 2027-2035.
[17] Szlemp, D.; Janecki, A.; and Bartelmus, G.; 2001. Hydrodynamics of a
co-current three-phase solid-bed reactor for foaming systems, Chemical
Engineering Science 56, 1111-1116.
[18] Bartelmus G, A., Gancarczyk, T., Kr├│tki, T., Mokros; Solid - liquid
mass transfer in a fixed - bed reactor operating in induced pulsing flow
regime, European Congress of Chemical Engineering (ECCE-6)
Copenhagen, 16-20 September 2007.
[19] Meng and Chung; Shorter communication, 1999, Experimental
evidence of hysteresis of pressure drop for countercurrent gas-liquid
flow in a fixed bed, Chemical Engineering Science, Vol. 53, No. 2, 367-
369
[20] A. Attou, G. Ferschneider, 2000, A two-fluid hydrodynamic model for
the transition between trickle and pulse flow in cocurrent gas-liquid
packed-bed reactor, Chem. Eng. Sci. 55 491-511.
[21] Gupta, R., and Bansal, A.; 2010. Hydrodynamic Studies on a Trickle
Bed Reactor for Foaming Liquids. Bulletin of Chemical Reaction
Engineering & Catalysis, 5 (1), 31 - 37.
[1] Geldart, D., Gas fluidization technology, John Wiley & Sons Ltd.,
Chichester, 1986.
[2] Burghardt, A.; Bartelmus, G.; Szlemp, A. 1995. Hydrodynamics of
pulsing flow in three-phase fixed-bed reactor operating at an elevated
pressure, Industrial and Engineering Chemistry Research 43, 4511-
4521.
[3] Bansal, A.; Wanchoo, R. K.; and Sharma, S. K., 2008. Flow regime
transition in a trickle bed reactor, Chemical Engineering
Communication 58 111-118.
[4] Bansal, A., Ph.D Thesis, 2003. Hydrodynamics of trickle bed reactor,
Engineering and Technology Faculty, Punjab University, Patiala,
Punjab, India.
[5] Prud-homme, R.K. and Khan S.A., ÔÇÿFoams, Theory, Measurements, and
Applications-, CRC Press, 1996.
[6] Midoux, N.; Favier, M.; Charpentier, J.C. 1976. Flow patterns, Pressure
loss and Liquid hold up data in Gas Liquid Downflow Paced Beds with
Foaming and Non-foaming Hydrocarbons, Journal of Chemical
Engineering, Japan, 9, 50.
[7] Schwartz, J. G., Wegei, E. and Dudukovic, M. P., 1976, A new tracer
method for determination of liquid-solid contacting efficiency in tricklebed
reactors, A.I.Ch.E.J. 22, 894-904.
[8] Saroha, A.K., Nigam, K.D.P.; 1996. Trickle bed reactors, Reviews in
Chemical Engineering 12, 207-347.
[9] Holub R.A, Dudukovic M.P., Ramachandran P.A.A.; 1992,
Phenomenological model for pressure drop, liquid holdup and flow
regimes transition in gas-liquid trickle flow, Chemical Engineering,
Science 47, 2343-2348.
[10] Grandjean B. P. A., Iliuta. I., Larachi, F.; 2002, New mechanistic model
for pressure drop and liquid holdup in trickle flow reactors, Chemical
Engineering Science 57, 3359 - 3371.
[11] Bartelmus G., Janecki, D.; 2003. Hydrodynamics of a cocurrent
downflow of gas and foaming liquid through the packed bed. Part II.
Liquid holdup and gas pressure drop, Chemical Engineering Process. 42,
993-1005.
[12] Larachi, F., Laurent, A., Midoux, N., Wild, G.; 1991. Experimental
study of a trickle bed reactor operating at high pressure: two-phase
pressure drop and liquid saturation. Chemical Engineering Science 46,
1233-1246.
[13] Iliuta, I., Larachi, F.; 2003, Onset of pulsing in gas-liquid trickle bed &
filtration, Chemical Engineering Science 59, 1199 - 1211.
[14] Aydin, B., Larachi, F.; 2008. Trickle bed hydrodynamics for non-
Newtonian foaming liquids in non-ambient conditions. Chemical
Engineering Journal 143, 236-243.
[15] Charpentier J.C., Favier M.; 1975, Some liquid holdup experimental data
in trickle bed reactors for foaming and non-foaming hydrocarbons,
A.I.Ch.E. Journal 21, 1213-1218.
[16] Sai, P.S.T., Varma, Y.B.G.; 1987. Pressure drop in gas-liquid downflow
through packed beds, American Institute of Chemical Engineering.
Journal 33, 2027-2035.
[17] Szlemp, D.; Janecki, A.; and Bartelmus, G.; 2001. Hydrodynamics of a
co-current three-phase solid-bed reactor for foaming systems, Chemical
Engineering Science 56, 1111-1116.
[18] Bartelmus G, A., Gancarczyk, T., Kr├│tki, T., Mokros; Solid - liquid
mass transfer in a fixed - bed reactor operating in induced pulsing flow
regime, European Congress of Chemical Engineering (ECCE-6)
Copenhagen, 16-20 September 2007.
[19] Meng and Chung; Shorter communication, 1999, Experimental
evidence of hysteresis of pressure drop for countercurrent gas-liquid
flow in a fixed bed, Chemical Engineering Science, Vol. 53, No. 2, 367-
369
[20] A. Attou, G. Ferschneider, 2000, A two-fluid hydrodynamic model for
the transition between trickle and pulse flow in cocurrent gas-liquid
packed-bed reactor, Chem. Eng. Sci. 55 491-511.
[21] Gupta, R., and Bansal, A.; 2010. Hydrodynamic Studies on a Trickle
Bed Reactor for Foaming Liquids. Bulletin of Chemical Reaction
Engineering & Catalysis, 5 (1), 31 - 37.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:51864", author = "Vijay Sodhi and Ajay Bansal", title = "Analysis of Foaming Flow Instabilities for Dynamic Liquid Saturation in Trickle Bed Reactor", abstract = "The effects of different parameters on the
hydrodynamics of trickle bed reactors were discussed for Newtonian
and non-Newtonian foaming systems. The varying parameters are
varying liquid velocities, gas flow velocities and surface tension. The
range for gas velocity is particularly large, thanks to the use of dense
gas to simulate very high pressure conditions. This data bank has
been used to compare the prediction accuracy of the different
trendlines and transition points from the literature. More than 240
experimental points for the trickle flow (GCF) and foaming pulsing
flow (PF/FPF) regime were obtained for present study.
Hydrodynamic characteristics involving dynamic liquid saturation
significantly influenced by gas and liquid flow rates. For 15 and 30
ppm air-aqueous surfactant solutions, dynamic liquid saturation
decreases with higher liquid and gas flow rates considerably in high
interaction regime. With decrease in surface tension i.e. for 45 and 60
ppm air-aqueous surfactant systems, effect was more pronounced
with decreases dynamic liquid saturation very sharply during regime
transition significantly at both low liquid and gas flow rates.", keywords = "Trickle Bed Reactor, Dynamic Liquid Saturation,Foaming, Flow Regime Transition", volume = "5", number = "8", pages = "678-7", }
